Power and automation solutions company ABB and its partner, welding consumables manufacturer Fronius, have exhibited three new welding applications and robots at the 2010 Electra Mining expo.
Fronius brand manager for Southern Africa Andre Botes explains that it has launched the cold metal transfer (CMT) system, the Trans Steel welding unit and the twin wire welding unit, the Time Twin.
“Using ABB’s IRB 4600, IRB 1600 and IRB 1410 robots, the range covers the market from one extreme to another for welding extremely thin material to extremely thick material,” he says.
The CMT system is capable of welding material as thin as 0,3-mm aluminium.
This is due to the cold metal transfer process, where the wire is forced to pull back during the welding process and droplet detachment takes place outside the melt pool, so that a much colder and faster weld is possible to eliminate deformation of the weld material.
The Trans Steel, which is a new process developed by Fronius and is the first of its kind in Africa, fits in with the normal day-to-day welding of normal carbon steel for construction and fabrication.
The Twin Time robotic welding package is a twin wire welding unit using two wires in a slave and master scenario. The first wire is the master and second wire is the slave, which means that the welding process is faster and material can be deposited at rates of up to 8 kg/h and at a wire feed speed of up to 30 m/min.